Pneumatic motor.



No. 851,472. P ATBNTED APR. 23, 1907.

P. WUEST, Jn.

PNEUMATIC MOTOR. APPLICATION FILED SBPT.19,1906.

5 SHEETS-SHEET 1.

WITNESS? mvzmom flfir A PM/P m/iJn/m, a i2: ffl;

PATBNTED APR. 23, 1907.

P. WUEST, JR. PNEUMATIC MOTOR.

APPLICATION FILED SEPT. 19, 1906.

5 SHEETS-SHEET 2 FIG/1 WITNESSES: INVENTOR:

$016M P/f/L/P Mam/2,

PATENTED APR. 23, 1907.

P. WUBST; JR.

.5 SHEETS-SHEET a.

Wm W

. WITNESSES:

110,851,472. PATENTED APR. 23, 1907. 7

P. WUBST, JR.

PNEUMATIC MOTOR.

APPLICATION FILED SEPT. 19. 1906.

5 SHEETS-SHEET 4.

I -WITN ESSESS:

INVENTOR: m V Pfi/L/P WUfSTJ/Z,

PATENTED APR. 23, 1907.

P. WUBST, JR. PNEUMATIC MOTOR. APPLICATION FILED SBPT.19,1906.

6 SHEETS-SHEET 6.

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WITNESSES:

UNITED STATES PATENT OFFICE.

PHILIP l/VUESI, Jlt, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AUTO-\IANUAL PIANO ACTION COMPANY, OF PHILADELPHIA, PENN- SYLVANIA, A CORPORATION OF NEW JERSEY.

PNEUMATIC MOTOR.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed September 19,1906. Serial No. 335.167.

T (olZ w/wm/ it may concern.-

Be it known that I, PHILIP WUEs'r, J r., of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Pneumatic IlIOtOI'S, whereof the following is a specification, reference being had to the accompanying drawings.

My improvements relate particularly to I pneumatic motors adapted to progress a 1:0 music sheet in a self playing musical instrument or instrument playing device and it is the object of my invention to minimize the leakage of air into the exhaust system by providing a closed diaphragm arranged to control the exhaust ports leading to the bellows or power pneumatics. The movement of said diaphragm is effected by comparatively small ports communicating with the exhaust system and controlled by a primary slide valve.

As hereinafter described my invention comprises a power pneumatic provided with a port in communication with the exhaust rcservoir and a port in communication with the atmosphere, the former being controlled by a closed diaphragm of flexible material such as rubber covered cloth, and the latter being controlled by a flap valve arranged to be opened and closed by the moving parts of the motor. It is characteristic of my invention that a motor so constructed may be run at a comparatively slow speed and thereby utilize less of the pneumatic power from the exhaust reservoir.

My invention also includes the regulator having a slide valve whereby the air duct between the power pneumatics of the motor, and the exhaust reservoir may be automatically controlled.

lVIy invention comprchends the various novel features of construction and arrangement hereinafter more definitely specified and claimed.

In the accompanying drawings, Figure I, is a front elevation of a motor constructed in accordance with my invention. Fig. II, is a transverse vertical sectional view taken on the line II, II, in Fig. I, showing the power pneumatic in the act of distending. Fig. III, is. a transverse vertical sectional view taken on the line III, III, in Fig. I, showing the power pneumatic in the act of collapsing.

, with the atmosphere.

view of said motor including the automatic regulator. Fig. V, is a transverse vertical, sectional view of saidregulatojr taken on the line V, V, in Fig. IV. Fig. VI, is a front elevation of a modified form of motor. Fig. VII, is a transverse vertical sectional view taken on the line VII, VII, in Fig. VI, and corresponding to Fig. III Fig. VIII, is a transverse vertical sectional view taken on the line VIII, VIII, in Fig. VI and corresponding to Fig. III.

In said figures, the frame 1, comprises the duct board 2, and front cover board 3. The power pneumatic comprising the stationary leaf or lever 41, which is secured to said. duct board 2, and the movable leaf or lever 5, whose end 6, is operatively connected by the connecting rod 7, to the crank shaft 8, having the cranks 9, 1(1, and 11. Said leaf 5, is hinged at its end 12, and provided with bellows 13, which when exhausted closes and when inflated distends. Said stationary leaf 4, is provided with ports which are continuations and form a part of ports 15, and 16, passing through the duct board 2, through which said bellows 13, may be respectively and alternately placed in communication with the exhaust bellows or reservoir, and

Said port 15 communicates with the exhaust reservoir when the (.liaphragm 17, is distended as indicated in F III, within its recess 18, in which position said diaphragm 17, uncovers the adjoining port 21), leading to the exhaust duct 22, which latter leads from the power pneumatic to the exhauster and as shown in Fig. I, is provided with the nipple 23, to receive a flexible connector or any suitable conduit tube. As will be hereinafter described, said port- '16, arranged to be closed by the flap valve 25, when the bellows 13, are being collapsed as shown in F III, and opened when said bellows are being distended, shown in Fig. II. The front cover board 3, comprises the ports 26 and 27, the former communicating with the recess 18, and the latter communicating with the exhaust duct 22. Said ports 26 and 27, are arranged to be controlled by the slide valve 30, which slides between the guides 31, and 32, and is connected in ad justablc relation to the crank shaft 8, by the slide valve rod 35. Said valve rod 35, is pro- Fig. IV, is a fragmentary front elevational vided with the roller 36, arranged to encounter the stem 38, of the flap valve 25, and lift the latter from its seat and thereby open said port 16, to the atmosphere while the power pneumatic is distending.

As best shown in Fig. I, the motor comprises three sets of power pneumatics and valves as above described, each set being respectively connected to the cranks 9, 10, and

11, on the crank shaft 8, which is conveniently supported by brackets 42 and 43, and which is provided with the collars and 46, and the toothed driving wheel 50, which may be connected to drive a countershaft at any desired speed. As shown in Figs; IV, and V said motor is automatically controlled by the pneumatic comprising the stationary leaf 52, which is secured to the duct board 2, and the movable leaf or lever 53, whose end 54, is operatively connected in adjustable relation to the slide valve 58, by the valve rod 59, having the threaded end 60, engaging the end 54, of said lever 53, by the nuts 62. Said leaf or lever 53, is hinged at its end 55, and provided with bellows 56, normally distended as best shown in Fig. V, by the spring 57. The stationary leaf or lever 52, is provided with the aperture 65, in communication with the chamber 66, in the duct board 2. Said chamber communicates with the duct 22, in said board 2, through any suitable conduit (not shown) but which may have its ends engaged by the nipples 63 and 64, respectively leading to the chamber 66, and the duct 22, and which may include a manually operated controlling valve. Said chamber 66, also communicates with the exhauster through the duct 68, slide valve 58, and the duct 70,

leading through the nipple 23, to the exhauster.

It will be seen that as the air in the chamber 66, becomes more and more rarefied the tension on the spring 57, is overcome and the bellows 56, tends to collapse against the ten sion of said spring, and shifts the slide valve 58, to the left with reference to Fig. V, to reduce the area of the duct 68, and thereby automatically regulate the degree of rarification of the air in the chamber 66, and duct 22.

Said motor operates as follows z As shown in Fig. III, the power pneumatic with its bellows 13, is in position to be collapsed, the flap valve 25 closes the port 16, and the slide valve 30, establishes communication be the arrows in Figs. II, and III, and is ready to distend, and the slide valve 30, opens the port 26, to atmosphere which enters the recess 18, and closes the ports 15, and 20, by the diaphragm 17 contemporaneously with the opening of the port 16, by the flap valve 25 which is raised by the roller 36, as above described. The bellows 13, continue to dis tend as shown in Fig. II, filling with atmospheric air through the open duct 16, until it is fully distended, and said crank 9, will occupy the position intermediate of the position occupied by the cranks 9, and 1, as shown in Fig. III, in which position the flap valve 25, is lowered to its seat and closes the duct 16; and said bellows 13, is again ready to col lapse to rotate the shaft 8. It is to be understood that each of the power pneumatics and the valves connected therewith forming a part of the motor, operates successively so that the shaft is being continuously driven by one or the other of said power pneumatics.

In the form of my invention shown in Figs. VI, VII, and VIII, the frame comprises the duct board 72, and front cover board 71, the power pneumatic comprising the stationary leaf or lever 7 3, which is secured to said duct board 72, and the movable leaf or lever 5, whose end 6, is operatively connected to the crank-shaft 8, by the rod 7. The stationary leaf 73, comprises the ports 74, and 75, said port 74, communicating with the exhaust reservoir when the diaphragm 17 is distended as indicated in Fig. VIII, within its recess 18, and uncovers the adjoining port 7 6, having the duct 77, leading to the exhaust duct 22, which latter leads to the exhauster. The port 75, is arranged to be closed by the flap valve 80, when the bellows 13, are being collapsed as shown in Fig. VIII, and opens when said bellows are being distended as shown in Fig. VII. The flap valve 80, is provided with the post 82, having the slot 83, at its outer end across which the leather covering 84, extends. The flap valve rod 85, is pivoted at its upper end to the slide valve rod 35, and prevented from displacement by the nut 87, and its lower end extends in slidable relation through the slot 83, and covering 84, and is provided with the washer 89, and nut 90, in threaded engagement there with so that when the slide valve 30, reaches its point of cutofl' of the port 26, the washer 89, and nut 90 wiil engage the post 82, and lift the flap valve 80, oif its seat to admit atmospheric air to the bellows 13, through the duct 7 5, and permit it to distend.

The motor last described operates as follows :The air therein is exhausted through the duct 22, which, in the position of the motor shown in Fig. VIII, exhausts the recess 18, through the ports 26, and 27 and opens communication between the bellows 13, and the exhaust duct 22, through the ICO IIO

ports 74, and 76. The .valve 80, being closed, said bellows 13, are exhausted and collapsed, and by the connecting rod 7, the shaft 8, is rotated in the direction of the arrow shown in Figs. VII, and VIII. When the bellows 13, are distending as shown in Fig. VII, the duct 26, is opened by the slide valve 30, and permits atmospheric pressure upon the diaphragm 17, which closes the ports 7 4 and 76, and contcmporaneously the rod 85, opens said valve 80, and permits the inflow of air to the bellows so that it may readily distend. As shown in Fig. VI, there are three sets of bellows and valves arranged to successively operate as above described, so that said shaft is continuously driven.

I do not desire to limit myself to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made thercinwithout departing from the essential features of my invention.

I claim j 1. In a pneumatic motor, the combination with a bellows having an exhaust port and an inlet port of a member provided. with an exhaust duct and with a port leading to said duct, said bellows exhaust port and said port leading to said exhaust duct being located adjacent one another; a diaphragm common to said adjacent ports arranged to alternately open and close them; a valve arranged to control the pressure of said diaphragm and means arranged to control said inlet port.

2. In a pneumatic motor, the combination with a bellows having an exhaust port and an inlet port; of a member provided with an exhaust duct and with a port leading to said duct, said bellows exhaust port and said port leading to said exhaust duct being located adjacent one another; a diaphragm common to said two adjacent ports, arranged to alternately open and close them; a valve arranged to pneumatically control said diaphragm; and a valve arranged to control said inlet port, substantially as set forth.

3. In a pneumatic motor, the combination with a bellows having an exhaust port and an inlet port; of a member provided with an exhaust duct and with a port leading to said duct, said bellows exhaust port and said port leading to said exhaust duct being located adjacent one another; a diaphragm common to said two adjacent ports, arranged to alternately open and close them; a valve arranged to pneumatically control said diaphragm to alternately open and close said two'adjaeent ports and alternately collapse and inflate said bellows; and a valve arranged to control said inlet port, substantially as set forth.

4. In a pneumatic motor, the combination of a bellows provided with an exhaust port and an inlet port, both leading to the interior thereof; a valve arranged to control said inlet port; a. memberprovided with an exhaust duct and with a port leading to said duct, said bellows exhaust port and said port leading to said exhaust duct being located adj acent one another; a diaphragm common to said two adjacent ports; a member having a recess for said (,liaphragm and having a port comnmnicating with said recess, said member being also provided with a port communicating with said exhaust duct; and a valve arranged to alternately connect and disconnect said ports in said member communicating with said exhaust duct and with said recess, substantially as set forth.

5. In a pneumatic motor, the combination with a bellows comprising a stationary leaf and a movable leaf and provided with an ex haust port and an air inlet port both communicating with the interior of said bellows; a valve arranged to control said inlet port; a frame having a port adjacent to said exhaust port in communication with an exhaust duct; a diaphragm common to said two adjacent ports and contained in a recess in said frame; and means for putting said recess in communication with said exhaust duct and with the atmosphere for controlling said diaphragm, substantially as set forth.

6. In a pneumatic motor, the combination with a bellows comprising a stationary leaf and a movable leaf, and provided with an exhaust port and an air inlet port, both communicating with the interior of said bellows; of a crank shaft having a crank; a rod connecting said movable leaf with said crank; a member provided with an exhaust duct and with a port leading to said duct, said exhaust port and said port leading to said exhaust duct being located adjacent one another; a second member having a recess and a port communicating therewith, said member also having a second port adjacent thisport and communicating with said exhaust duct; a diaphragm common to the adjacent ports of said first mentioned member and contained within said recess; a slide valve connected by the rod to said crank arranged to alternately connect and disconnect said adjacent ports in said second member; and. a flap valve for said inlet port arranged. to' be alternately IIO opened and closed by said valve rod, substantially as set forth.

7. In a pneumatic motor, the combination with a bellows having an. exhaust port and an inlet port; of a member provided with an ex-. haust duct and with a port leading to said duct, said bellows exhaust port and said port leading to said exhaust duct being located adjacent one another; a diaphragm common to said adjacent ports arranged to alternately open and close them, said diaphragm being held closed by air pressure; aregulator comprising bellows in communication with said exhaust duct; a spring arranged to nor- In testimony whereof, I have hereunto mally distend said bellows; a valve in said signed my name, at Philadelphia, PennsylvaeXhaust duct arranged to be controlled by nia, this 17th day of September 1906.

said regulator bellows; means to adjust said PHILIP W UEST, JR. valve with respect to said bellows; and Witnesses means for relieving the pressure of said dia- JAMEs H. BELL,

phragm, substantially as set forth. E. L. F LLERTON. 

